Reluctance motor - Wikipedia

A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor. The rotor does not have any windings. It generates torque through magnetic reluctance.. Reluctance motor subtypes include synchronous, variable, switched and variable stepping. Reluctance motors can deliver high power density at low cost, making them attractive for many

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Types of Electric Motors - UAH - Engineering

Types of Electric Motors Electric Motors DC Motors Other Motors h AC Motors S unt motor Separately Excited Induction motor Stepper motor motor BrushlessDC motor Series Motor Hysteresis motor Permanent Magnet DC (PMDC) Synchronous motor Reluctance motor Compounded motor Universal motor. DC Motors 1. Shunt DC motor: The rotor and stator windings are connected in parallel. 2.

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DC Motor Introduction, Principle and Working

DC Motor Introduction, Principle and Working Introduction: DC motors are rarely utilized in normal applications as a result of all electrical supply firms furnish electrical energy but, for special applications like in steel mills, mines and electric traction, it's advantageous to convert AC into DC so as to use DC

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Types of DC Motor - Shunt, Series & Compound

Types of DC Motor A Direct Current Motor, DC is named according to the connection of the field winding with the armature.Mainly there are two types of DC Motors. First, one is Separately Excited DC Motor and Self-excited DC Motor. The self-excited motors are further classified as Shunt wound or shunt motor, Series wound or series motor and Compound wound or compound motor.

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DC Machines - O'Reilly Online Learning

DC machines work either as a dc generator or as a dc motor. In a dc generator, a set of conductors or coils placed on a rotating body, called armature, are rotated continuously inside a magnetic field with the help of a prime mover (prime mover is another machine, may be a diesel engine or a turbine, which rotates the armature). The magnetic field is created by passing dc current through the

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Construction of dc Machines - UTK

Construction of dc Machines: The rotor in a dc machine is called an armature. The armature has cylindrical steel core that is composed of a stack of slotted laminations. Slots in laminations are aligned axially along rotor or shaft. Armature windings are placed in slots. The stator in a dc machine is the field part of the machine. Field poles are located on stator and project inward. Each pole

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DC MACHINE.pdf | Electric Motor | Electrodynamics

DC Machines. Generator action: An emf (voltage) is induced in a conductor if it moves through a magnetic field. Motor action: A force is induced in a conductor that has a current going through it and placed in a magnetic field Any DC machine can act either as a generator or as a motor. DC Machine is most often used for a motor.

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DC GENERATOR - Weebly

A dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf. CONSTRUCTION: Cross Sectional View of DC Generator Above figure shows the constructional details of a simple 4-pole DC generator. A DC generator consists two basic parts, stator and rotor. Basic

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Construction of a DC Generator - explanation of

Construction of a DC Generator A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. Magnetic field system, Armature and Commutator and Brush gear. The other parts of a DC Generator are Magnetic frame and Yoke, Pole Core and Pole Shoes, Field or Exciting

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DC Machines - O'Reilly Online Learning

DC machines work either as a dc generator or as a dc motor. In a dc generator, a set of conductors or coils placed on a rotating body, called armature, are rotated continuously inside a magnetic field with the help of a prime mover (prime mover is another machine, may be a diesel engine or a turbine, which rotates the armature). The magnetic field is created by passing dc current through the

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Classifications of DC machines : (DC Motors and

Each DC machine can act as a generator or a motor. Hence, this classification is valid for both: DC generators and DC motors. DC machines are usually classified on the basis of their field excitation method. This makes two broad categories of dc machines; (i) Separately excited and (ii) Self-excited.

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DC Machine: Construction And Working

10/01/2014· A SIMPLE explanation of the construction and working principle of a DC Machine (DC Motor or DC Generator). Understand the parts of a DC Machine and the construction of a DC Machine.

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Classifications of DC machines : (DC Motors and

Each DC machine can act as a generator or a motor. Hence, this classification is valid for both: DC generators and DC motors. DC machines are usually classified on the basis of their field excitation method. This makes two broad categories of dc machines; (i) Separately excited and (ii) Self-excited.

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Machine à courant continu — Wikipédia

Machine de base ou machine à excitation indépendante Description sommaire. Une machine électrique à courant continu est constituée : d'un stator qui est à l'origine de la circulation d'un flux magnétique longitudinal fixe créé soit par des enroulements statoriques soit par des aimants permanents.Il est aussi appelé « inducteur » en référence au fonctionnement en génératrice de

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Introduction to Rotating Machines

multipole, three-phase synchronous motor under construction. In a dc machine, the armature winding is found on the rotating member, referred to as the rotor. Figure 4.2 shows a dc-machine rotor. As we will see, the armature winding of a dc machine consists of many coils connected together to form a closed loop. A rotating mechanical contact is used to supply current to the armature winding as

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THEORY, CONSTRUCTION, AND OPERATION

THEORY, CONSTRUCTION, AND OPERATION 1. CHAPTER 1 PRINCIPLES OF OPERATION OF SYNCHRONOUS MACHINES The synchronous electrical generator (also called alternator) belongs to the family of electric rotating machines. Other members of the family are the direct-current (dc) motor or generator, the induction motor or generator, and a number of derivatives of all these three. What is

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DC Machines - MAURÍCIO ROMANI

DC Machines Construction The stator of the dc motor has poles, which are excited by dc current to produce magnetic fields. In the neutral zone, in the middle between the poles, commutating poles are placed to reduce sparking of the commutator. The commutating poles are supplied by dc current. Compensating windings are

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ELECTRICAL MACHINE-II

Induction motor is originated in the year 1891 with crude construction(The induction machine principle was invented by . NIKOLA TESLA; in 1888.. Then an improved construction with ) distributed stator windings and a cage rotor was built. The slip ring rotor was developed after a decade or so. Since then a lot of improvement has taken place on the design of these two types of induction motors

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What is a DC machine? - Quora

A DC Machine is an electro-mechanical energy conversion device. There are two types of DC machines; one is DC generator, and another one is known as DC motor. A DC generator converts mechanical power (ωT) into DC electrical power (EI), whereas, a

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Construction of DC Machine - Polytechnic Hub

Construction of DC Machine. 1. Yoke. Yoke. Function. It provide mechanical Support for poles; It also provide protection to whole machine from dust, moisture etc. It also carries magnetic flux produced by the poles; Yoke is also called as frame. Material used. For small M/C yoke is made of cast iron. For large M/C it is made of cast steel or rolled steel. 2. Pole & Pole core. Pole & Pole core

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